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  • Shimano BB-UN300 Bottom Bracket - 68-122.5mm (LL123) 68-122.5mm
  • A good quality bottom bracket for traditional chainsets
  • Super-accurate bearings for smooth operation and improved durability
  • Durable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fitting
  • Maintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing life
  • Fast and easy installation without adjustment
  • Narrow body allows clearance for cable routing under the bottom bracket
  • 68-122.5mm shell width compatibility
Shimano

BB-UN300 Bottom Bracket - 68-122.5mm (LL123)

5 Reviews5 total reviews

SKU: BBUN300B23 / Barcode: 4550170619251
A good quality bottom bracket for traditional chainsets Super-accurate bearings for smooth operation and improved durability Durable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fitting Maintenance-free sealed cartridge Read more
Sale price £10.95 Regular price RRP £23.99 SAVE 54%
Size 68-122.5mm
In stock

90 Day Returns

  • A good quality bottom bracket for traditional chainsets
  • Super-accurate bearings for smooth operation and improved durability
  • Durable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fitting
  • Maintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing life
  • Fast and easy installation without adjustment
  • Narrow body allows clearance for cable routing under the bottom bracket
  • 68-122.5mm shell width compatibility

Customer Reviews

5.0
Rated 5.0 out of 5 stars
Based on 5 reviews
Total 5 star reviews: 5 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
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5 reviews
  • AH
    Andy Holbrook (.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 years ago
    New Shimano BB-UN300 Bottom Bracket

    Excellent quality spare part. Well packaged and promptly sent. Fitted perfectly, got me back on the road again, thank you.

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  • MS
    Martin S.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    4 minutes ago
    Remarkable Value

    A very good price indeed for the Shimano bottom bracket. Straightforward, no hassle ordering with good delivery service.

    I'll check in again for the next bike part needs for sure.

    Thanks Martin

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  • MS
    michael salmon (.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 year ago
    replace worn out bottom bracket,

    only size that fits .

    my cycle .

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  • KJ
    Krzysztof Jeromkin EVie Workshop (.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 years ago
    Bottom bracket

    Good quality stuff and quick delivery 👌 👍

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  • DC
    David Cooper (.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 years ago
    Good product at a good price

    Bought to replace a worn bearing on an MTB. Fitted it without any problems and it worked perfectly as you would expect. The bottom bracket is now beautifully smooth. A high quality item and great value too. Thankyou.

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